TYC 20-6178-00 Headlight Assembly - Left

TYC Left Headlight Assembly for Toyota Sequoia and Tundra

Restore front-end lighting on your Toyota with this TYC Regular headlight assembly, part number 20-6178-00. It is built for the left side and includes halogen bulbs, making it a direct replacement option for specific Toyota Sequoia and Toyota Tundra applications.

Key Features

• TYC Regular headlight assembly for exterior lighting repair
• Left-side fitment for confirmed Toyota applications
• Bulbs included for a complete lighting unit
• Halogen bulb type with Halogen H4 low beam bulb
• High beam bulb included and halogen type
• Plastic lens and plastic housing construction
• SAE/DOT compliant for road-use requirements
• Cross-reference: Toyota 81150-0C020 and Partslink TO2502144

Detailed Description

This TYC 20-6178-00 headlight assembly is a left-side exterior lighting replacement for 2001-2004 Toyota Sequoia, left, and 2004 Toyota Tundra, left, Double Cab. The assembly includes both high beam and low beam bulbs, uses halogen lighting, and features a plastic lens and housing for a service-ready replacement. The TYC Regular line focuses on practical OE-style replacement parts for common lighting repairs, and this unit is built to match the listed Toyota fitment and lighting configuration.

For Toyota Sequoia and Toyota Tundra owners replacing a damaged, cloudy, or non-functioning driver-side headlamp, part number 20-6178-00 provides a direct-fit lighting assembly for the specified model years. It also cross-references Toyota 81150-0C020 and Partslink TO2502144 for the same application.

Common Repair Uses

• Replacing a cracked or broken left headlight assembly
• Restoring low beam or high beam lighting output
• Addressing moisture intrusion from a damaged lamp housing
• Correcting reduced road visibility caused by worn headlamp components
• Returning a Toyota Sequoia or Toyota Tundra to proper front lighting function

Installation Notes and Tips

Verify left-side placement before installation and confirm the vehicle matches the listed fitment: 2001-2004 Toyota Sequoia, left, and 2004 Toyota Tundra, left, Double Cab. Compare the existing connector, bulb style, and mounting points to the original lamp before removal. After installation, aim the headlight assembly according to vehicle service specifications to maintain proper beam pattern and road visibility.

Quality Assurance

This TYC headlight assembly is SAE/DOT compliant and built as a replacement lighting component for the specified Toyota applications. The TYC Regular product line is positioned as a practical replacement option for exterior lighting service on Toyota Sequoia and Toyota Tundra models.